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Gnom [1K]
4 years ago
6

Find the perimeter of a semi-circle, where radius= 5.6mm (pls answer step by step)

Mathematics
1 answer:
-Dominant- [34]4 years ago
3 0

Step-by-step explanation:

Perimeter of semicircle =

Half of circumference of circle + diameter of circle =

\pi \: r + 2r \\  \\   =  \frac{22}{7}  \times 5.6 + 2 \times 5.6 \\  \\  = 22 \times 0.8 + 11.2 \\  \\  = 17.6 + 11.2 \\  \\  = 28.8 \: mm

Thus, option B is the correct answer

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